Whether they've earned their fame through acting, singing or winning on the field, these superstars have dedicated their off-duty time to helping the United Nations raise awareness—and funds—for important causes around the world. From hunger relief to children's health, see which celebs have gone global to do good.
Back to the Roots, an Oakland-based company that uses discarded coffee grounds as soil to grow sustainable, gourmet oyster mushrooms, has launched a new Facebook campaign to get schools involved in growing their own food.
Any time someone posts a picture of their fully grown kit onto Back to the Roots' Facebook page, the company donates a kit and a sustainability curriculum to a an elementary school classroom of their choice!
Read TakePart's exclusive Back to the Roots story here.